CRIS Current Research Information System

A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8 TeV centre-of-mass energy is presented. The measurement is based on a sample of Z → e+ e− decays reconstructed using the LHCb detector, corresponding to an integrated luminosity of 2.0 fb^−1. The acceptance is defined by the requirements 2.0 < η < 4.5 and p_T > 20 GeV for the pseudorapidities and transverse momenta of the leptons. Their invariant mass is required to lie in the range 60-120 GeV. The cross-section is determined to be σ(pp → Z → e+ e−) = 93.81 ± 0.41(stat) ± 1.48(syst) ± 1.14(lumi)pb, where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable ϕ*, which is related to the Z-boson transverse momentum.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). Measurement of Forward Z → e+ e− Production at √s = 8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(5), 0-20 [10.1007/JHEP05(2015)109].

Measurement of Forward Z → e+ e− Production at √s = 8 TeV

CARBONE, ANGELO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2015

Abstract

A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8 TeV centre-of-mass energy is presented. The measurement is based on a sample of Z → e+ e− decays reconstructed using the LHCb detector, corresponding to an integrated luminosity of 2.0 fb^−1. The acceptance is defined by the requirements 2.0 < η < 4.5 and p_T > 20 GeV for the pseudorapidities and transverse momenta of the leptons. Their invariant mass is required to lie in the range 60-120 GeV. The cross-section is determined to be σ(pp → Z → e+ e−) = 93.81 ± 0.41(stat) ± 1.48(syst) ± 1.14(lumi)pb, where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable ϕ*, which is related to the Z-boson transverse momentum.
2015
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, et al. (2015). Measurement of Forward Z → e+ e− Production at √s = 8 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2015(5), 0-20 [10.1007/JHEP05(2015)109].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/493371
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 56
social impact